one of the Galápagos Islands, in the eastern Pacific Ocean, about 600 miles (965 km) west of Ecuador. The island has an area of about 1 square mile (3 square km) and is studded with several small volcanic craters. Originally named for the 18th-century British admiral John Jervis, Earl of St. Vincent, the island's official Ecuadorian name is Isla Rábida. Rábida has a lagoon and a flamingo rookery but no human population.